diff options
| -rw-r--r-- | src/drivers/i2c/alps/Kconfig | 3 | ||||
| -rw-r--r-- | src/drivers/i2c/alps/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/drivers/i2c/alps/alps.c | 59 | ||||
| -rw-r--r-- | src/drivers/i2c/alps/chip.h | 30 |
4 files changed, 93 insertions, 0 deletions
diff --git a/src/drivers/i2c/alps/Kconfig b/src/drivers/i2c/alps/Kconfig new file mode 100644 index 0000000000..b49581d4aa --- /dev/null +++ b/src/drivers/i2c/alps/Kconfig @@ -0,0 +1,3 @@ +config DRIVERS_I2C_ALPS + bool + select DRIVERS_I2C_GENERIC diff --git a/src/drivers/i2c/alps/Makefile.inc b/src/drivers/i2c/alps/Makefile.inc new file mode 100644 index 0000000000..aa18034a03 --- /dev/null +++ b/src/drivers/i2c/alps/Makefile.inc @@ -0,0 +1 @@ +ramstage-$(CONFIG_DRIVERS_I2C_ALPS) += alps.c diff --git a/src/drivers/i2c/alps/alps.c b/src/drivers/i2c/alps/alps.c new file mode 100644 index 0000000000..2686f6c0ca --- /dev/null +++ b/src/drivers/i2c/alps/alps.c @@ -0,0 +1,59 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2016 Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <arch/acpigen_dsm.h> +#include <device/device.h> +#include <stdint.h> +#include "chip.h" + +static void i2c_alps_fill_dsm(struct device *dev) +{ + struct drivers_i2c_alps_config *config = dev->chip_info; + struct dsm_i2c_hid_config dsm_config = { + .hid_desc_reg_offset = config->hid_desc_reg_offset, + }; + + acpigen_write_dsm_i2c_hid(&dsm_config); +} + +static void i2c_alps_fill_ssdt_generator(struct device *dev) +{ + i2c_generic_fill_ssdt(dev, &i2c_alps_fill_dsm); +} + +static const char *i2c_alps_acpi_name(struct device *dev) +{ + return "ALPS"; +} + +static struct device_operations i2c_alps_ops = { + .read_resources = DEVICE_NOOP, + .set_resources = DEVICE_NOOP, + .enable_resources = DEVICE_NOOP, +#if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES) + .acpi_name = &i2c_alps_acpi_name, + .acpi_fill_ssdt_generator = &i2c_alps_fill_ssdt_generator, +#endif +}; + +static void i2c_alps_enable(struct device *dev) +{ + dev->ops = &i2c_alps_ops; +} + +struct chip_operations drivers_i2c_alps_ops = { + CHIP_NAME("ALPS I2C Device") + .enable_dev = &i2c_alps_enable +}; diff --git a/src/drivers/i2c/alps/chip.h b/src/drivers/i2c/alps/chip.h new file mode 100644 index 0000000000..fb0b0fab4f --- /dev/null +++ b/src/drivers/i2c/alps/chip.h @@ -0,0 +1,30 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2016 Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __I2C_ALPS_CHIP_H__ +#define __I2C_ALPS_CHIP_H__ + +#include <drivers/i2c/generic/chip.h> + +#define ALPS0001_HID "ALPS0001" +#define PNP0C50_CID "PNP0C50" +#define ALPS_TP_DESC "ALPS Touchpad" + +struct drivers_i2c_alps_config { + struct drivers_i2c_generic_config generic; + uint8_t hid_desc_reg_offset; +}; + +#endif /* __I2C_ALPS_CHIP_H__ */ |